Jig or scroll saw.



No. 879,656. PATENTED PEB. 18, 1908.

W. E. LAWRENCE.

m 0R SCROLL SAW.

APPLICATION TILED MAY 21, 1907.

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FFTOEQ WILLIAM E. LAWRENCE, OF BROOKLYN, NEW YORK.

JIG OR SCROLL SAW.

Specification of Letters Patent.

Patented Feb. 18, 1908.

Application filed May 21. 1907. Serial No. 3'74n822.

T 0 all whom it may concern:

Be it known that I, VVILLIAM E. LAWRENCE, a citizen of the UnitedStates, and residing at Brooklyn, in the county of Kings and State ofNew York, have invented certain new and useful Improvements in Jig orScroll Saws, of which the following is a speci fication, such as willenable those skilled in the art to which it appertains to make and usethe same.

This invention relates to what are known as jig or scroll saws, and theobject thereof is to provide an improved device of this class which issimple and comparatively inexpensive in construction and effective inoperation and which may be conveniently secured to a table, bench orother support so as to be operated, or manipulated, in the manner ofother devices of this class.

The invention is fully disclosed in the fol lowing specification, ofwhich the accompanying drawing forms a part, in which the separate partsof my improvement are designated by suitable reference characters ineach of the views, and in which;-

Figure 1 is afront view of my improved jig or scroll saw and showing thesame secured to a table or other support; Fig. 2 a side view thereof;and, Fig. 3 a plan view of the saw detached from the table or othersupport.

In the practice of my invention I provide a support or frame membercomprising a plate a one end of which is bent to form a U-shaped arm awhich extends upwardly and is directed forwardly over the plate a andthe arm a is provided with an upwardly directed member a having avertically arranged slot or opening a and the end of the plate atopposite the arm a is provided with a downwardly directed member or arma having a forwardly directed extension a provided with a slot oropening (1 Secured to the base of the arm a and on the outer sidethereof as shown at b is a curved spring 0 the curve of which is greaterand corresponds with the curve of the arm a and said curved spring 0 isprovided with a forwardly directed arm 0 which passes through the slotor opening a in the upwardly directed member a of the arm (1 Connectedwith the forward end of the arm 0 is the saw blade d, this connection,in the form of construction shown, being made by means of a loop-shapedlink member e, but said connection may be made in any desired manner,and secured to the front end of the plate a is work piece support, diskor plate f which in the construction shown is circular in form but whichmay be of any desired shape, and said plate f is provided approximatelycentrally thereof with a hole or openingf and the saw blade (Z passesdownwardly through said hole or opening, and connected with the lowerend of the saw is a bar or similar device g which passes downwardlythrough the slot or opening a in the part a of the depending member a?of the plate a, and connected with the lower end of said bar is a handleh by means of which the saw may be manipulated by hand if desired, andsaid handle member h is also provided with a ring, link or similardevice 7L2 with which a pedal may be connected if it is desired tooperate the saw by means of foot power. I have also shown at i a part ofa table to which my improved or scroll saw may be secured, and in theform of construction shown the work piece support f is secured to theplate a by means of screws 7' which also secure the jig or scroll saw tothe table 71, another screw or screws j being also-employed for thispurpose, but it will be understood that the work piece support f may beconnected with the plate a in any desired manner, and in practice saidwork piece support will be connected with the plate a independently ofthe devices which connect the jig or scroll saw with the table.

In practice the work piece is placed on the support f and manipulated inthe usual manner and the saw blade (Z is moved up and down by means ofthe handle it or by foot power if desired, and in this operation theupward movement of the saw is accomplished by the spring arm 0 and theextent of both movements of the arm a and the saw blade d is limited bythe length of the slot or opening a in the upwardly directed member a ofthe arm (1 It will be understood that the parts a, a a a and f form theframework of the operative or movable parts of the device, while thespring arm 0 the saw blade (1 and the bar 9 connected with the lower endof the saw blade form the operative or movable parts, and it will alsobe understood that changes in and modifications of the frame work of thedevice may be made without departing from the spirit of my invention, orsacrificing its advantages.

having at its front end an upwardly directed member provided with avertically arranged .slot or opening, said bottom frame member beingalso provided at its opposite or front end with a downwardly directedarm having a laterally or forwardly directed extension provided with aslot or opening, and a spring secured to the base portion of theupwardly and forwardly directed frame arm and the free end of which isprovided with an arm which passes forwardly through the slot or openingin the upwardly directed member of said arm, a saw blade connected withthe free end of said spring arm and passing downwardly through a worksupport plate connected with the end of the base frame member over saiddownwardly directed arm, and an operating device connected. with thelower end of said blade.

2. A jig or scroll saw comprising a bottom frame member provided at oneend with a curved upwardly and forwardly directed frame arm having anupwardly directed member provided with a vertically arranged slot oropening, said bottom frame member being also provided at its oppositeend with a work piece support having a central hole or opening, a springconnected with the outer base portion of the curved frame arm andcarried upwardly thereover and provided with an arm which is passedthrough the slot or opening in the upwardly directed member of said arm,a saw blade connected with the forward end of said spring arm and passeddownwardly through the hole or opening in the work piece support, and aworking device connected with the lower end of said saw blade.

3. A jig or scroll saw comprising a base frame member provided at oneend with an upwardly directed frame arm, a spring secured to theupwardly directed frame arm and provided with an arm passing through aguide slot or opening in said upwardly directed frame arm, and a sawblade connected with the free end of the spring arm and passingdownwardly through a work piece support connected with the base framemember.

4. A jig or scroll saw comprising a frame,-

consisting of a base member provided at one end with an upwardlydirected frame arm and at the other end with a downwardly directed framearm having a forwardly directed extension, a spring secured outwardly ofthe upwardly directed frame arm and provided with a spring arm passingthrough a vertically arranged slot or opening in the end thereof, a sawblade connected with the free end of the spring arm and passingdownwardly through a work piece connected with the base frame member,and a bar connected with the lower end of said saw blade and passingdownwardly through the slot or opening in the end portion of thedownwardly directed frame arm.

In testimony that I claim the foregoing as my invention I have signed myname in presence of the subscribing witnesses this 18th day of May,1906.

WILLIAM E. LAWRENCE.

WVitnesses:

O. E. MULREANY, A. WORDEN GIBBs.

